EP4014079A1 - Method of installing a pipe cable clamp with repeated tensioning of the clamping strap and a related installation device for its performance - Google Patents

Method of installing a pipe cable clamp with repeated tensioning of the clamping strap and a related installation device for its performance

Info

Publication number
EP4014079A1
EP4014079A1 EP20742638.8A EP20742638A EP4014079A1 EP 4014079 A1 EP4014079 A1 EP 4014079A1 EP 20742638 A EP20742638 A EP 20742638A EP 4014079 A1 EP4014079 A1 EP 4014079A1
Authority
EP
European Patent Office
Prior art keywords
clamping
strap
installation
clamping strap
fastening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20742638.8A
Other languages
German (de)
French (fr)
Inventor
Michal Najman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gwb Cz S R O
GwbCz SRO
Original Assignee
Gwb Cz S R O
GwbCz SRO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gwb Cz S R O, GwbCz SRO filed Critical Gwb Cz S R O
Publication of EP4014079A1 publication Critical patent/EP4014079A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
    • B25B25/005—Implements for fastening, connecting or tensioning of wire or strip for applying wire clasps to hose couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • F16L3/133—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and hanging from a pendant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/14—Hangers in the form of bands or chains
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G02B6/502—Installation methods in fluid conducts, e.g. pipelines
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G02B6/508—Fixation devices in ducts for drawing cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G02B6/54—Underground or underwater installation; Installation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
    • H02G1/088—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using pulling devices movable inside conduits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/50—Pulling cables or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
    • F16L3/06—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing with supports for wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • F16L3/13—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and engaging it by snap action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe

Definitions

  • the invention relates to the method of installing a pipe cable clamp for guiding cables in pipes, in particular sewer network pipes, with repeated tensioning of the clamping strap and an installation device for carrying out this method.
  • Japanese Patent Application JPH05272664 describes the fixing of cables in pipes by means of horseshoe- shaped spring-loaded brackets made of a flat material and fixed along the walls of the pipe with the open part facing downwards. These brackets abut on the inner walls of the pipe only by the force of their pre- springing and are set into the pipe by means of inverted T-shaped segments detachably attached by means of locks to the brackets at the ends of their arms which enclose the horseshoe shape to a smaller diameter than the pipe diameter and which are interconnected with a pulling cord.
  • the T-segments After transporting the brackets to the place of destination in the pipeline, the T-segments are disconnected from the brackets by pulling them in one direction by means of a pulling cord.
  • the method of fastening the brackets is very complicated and the reliability of their fastening at a specific place is quite problematic, also due to the obviously weak expansion force of the brackets given only by the prestressing of the material used.
  • Another European patent EP1271728 relates to a similar fastening element, but made of a flexibly expandable thermoplastic material which is expanded by means of hot water or steam.
  • the magnitude of the pressing force holding the fastening element in place is debatable; furthermore this design considerably reduces the inner diameter of the pipe and its disassembly or re-installation of cables is practically impossible.
  • a similar cable fastening system is described in Japanese Patent Applications JP2002250849, JPH06339216 and British Patent Application GB2345388, where the cable fastening is performed with a special foam at either the top or bottom of the pipe.
  • German Patent Application DE19825325 addresses the solution for laying optical cables by means of a longitudinally folded hose made of fabric or gel material, on the outer surface of which the optical cables are fixed.
  • the hose material is impregnated with a thermosetting or UV curable resin. After it is inserted into the pipe, the hose is stretched and pressed against the inner surface of the pipe with pressurized air and subsequently it is cured by heat or UV radiation. Any inspection of installation (lying) of optical cables, or their replacement or addition of another cable is impossible.
  • the resistance of the material of the hose inserted to the pipe to mechanical or chemical influences given by the internal environment of the waste pipe also appears to be problematic.
  • European Patent Application EP0936479 describes a clamp with a clamping closure, the basis of which is a helically wound flat clamping strap with transverse sections, which is anchored in the clamp with one end, then surrounds the inner surface of the pipe and with the other free end it is inserted back into the clamp with the clamping closure provided with a releasable snap-in element.
  • the clamping closure is provided with a spring acting extensively on the clamping strap via its mechanism, whereby the clamp is fixed around the inner wall of the pipe.
  • this solution is intended for pipes from a diameter of 200 mm, that also being due to the dimensions of the clamping closure, which significantly reduces the clearance of the pipe, which is also due to the location of springs above the clamping strap.
  • the concept of the clamp installation device described in the European Patent File EP0978743 it is only feasible in straight sections of the backbone sections of waste piping systems.
  • the pipe cable clamp according to this design comprises a helically wound flat clamping strap provided with transverse slots, to which at least one cable bracket is mounted and which comprises an external thread and an internal thread, as well as a clamping lock in which the clamping strap is mounted.
  • the internal thread of the clamping strap is mounted slidably in the body of the clamping lock, and on the other hand, the clamping lock comprises compression springs coupled to the internal thread of the clamping strap.
  • the essence of the solution lies in the fact that the springs are mounted in the clamping lock along the edges of the clamping strap outside the contour of its perpendicular projection to the cylindrical surface of the pipe, while the compression springs being coupled with the inner thread of the clamping strap by a travel member slidably mounted in the clamping lock.
  • the travel member is provided at the end opposite the rear wall of the clamping lock with spring stops, against which the springs lean at one end, while at the other end they lean against the rear wall of the clamping lock.
  • the travel member is coupled with the internal thread of the clamping strap by means of a push tongue pivoted in the travel member, while the travel member is adapted both to fix it in the rear position when the springs are compressed and to release it by means of a latch.
  • This latch is slidably mounted in the vertical direction in a bottom-open latch cavity formed in the travel member, where the latch spring also resting in the latch cavity abuts on the upper surface of the latch.
  • a through-latch hole is formed in the bottom of the inner cavity, the dimensions of which correspond to the dimensions of the respective part of the latch with which they are mutually compatible.
  • the subject of the solution according to PV 2018-382 is the set of devices for the installation of the pipe cable clamp.
  • This assembly is adapted for movement through the piping and comprises both the support body and an expansion mechanism with a clamping wheel.
  • the individual devices can be mutually coupled by articulated joints in an arbitrary number of pieces.
  • the support body of each device is provided with a clamping bed for accommodating a clamping lock of the pipe cable clamp, the clamping lock being fixed to the clamping bed by clamping between the jaws of the jaw mechanism.
  • the shape and the dimensions of the clamping bed correspond to the shapes and dimensions of the clamping lock of the pipe cable clamp.
  • a firing drive for fixing the pipe cable clamp in the pipe is placed under the clamping bed and a through firing hole is formed in the surface of the clamping bed, where this hole corresponds with its dimensions and position to the shapes and position of the latch of the travel member of the pipe cable clamp lock.
  • the firing drive is equipped with a firing pin, the dimensions and location of which correspond to the dimensions and position of the firing hole.
  • the device is provided with a telescopic strut mechanism with at least one telescopic strut. To ensure the movement through and along the pipeline, the device is provided with a bogie with travel wheels mounted on the wheel shafts of the travel motors, which are slidably mounted with respect to the support body in the vertical direction, their vertical movement being controlled by lifting motors.
  • the method of installing a pipe clamp with repeated re-tensioning of the clamping strap according to the invention contributes to the elimination of the above-mentioned problems.
  • This method of installation employs the pipe cable clamp according to this design comprises a helically wound flat clamping strap provided with transverse slots, to which at least one cable bracket is mounted and which comprises an external thread and an internal thread, as well as a clamping lock in which the clamping strap is mounted.
  • the inner thread of the clamping strap is slidably mounted in the clamping lock body and the clamping lock comprises compression springs which abut with one end on the spring stops of the clamping lock and at the other end they abut on the rear wall of the clamping lock and are coupled with the inner thread of the clamping strap via the travel slidably mounted member in the clamping lock.
  • a pushing tongue is pivoted in the travel member, this pushing tongue being provided at its end facing the end of the travel member with spring stops with an upward directed tooth engaged in one of the transverse slots of the clamping strap, and being pushed upwards by a spring-loaded pressure element housed in the travel member.
  • the helically wound clamping strap gradually expands by the action of the clamping wheel of the expansion mechanism of the installation device by increasing its diameter until it adheres to the inner surface of the pipe over its entire outer circumference.
  • the essence of the invention lies in the fact that the next phase of the installation consists in at least one re-tensioning of the clamping strap, which is performed by repeated prestressing and releasing of springs by the fastening mechanism of the installation device, always with fixing the previously reached clamping strap clamping position.
  • the clamping lock In the initial position of the re-clamping phase of the installation, the clamping lock is intercepted by the fastening pliers of the fastening mechanism so that its travel member is slightly compressed in order for the springs to generate sufficient pressure to prevent the clamp from popping out of the clamping bed of the installation device.
  • the fastening pliers of the fastening mechanism move the travel member in the clamping lock to the fully retracted position, thereby maximally compressing the springs and displacing the tooth of the push tongue by at least one slot in the clamping strap. Furthermore, after fixing the achieved re-clamped position of the clamping strap, the travel member of the clamping lock is released by the fastening pliers of the fastening mechanism so that it returns to the initial installation position and the clamping strap is further extended and re-clamped.
  • the described re-tensioning cycle is repeated until the phase when the clamping strap can no longer be tensioned, because during tensioning the tooth of the push tongue no longer moves by a single slot in the strap, which is identified by not hearing the characteristic sound of the tooth of the push tongue snapping into the next slot in the strap.
  • the clamping wheel of the expansion mechanism can be used to an advantage to fix the previously reached tensioning position of the clamping strap.
  • the installation device for carrying out the method according to the invention which is adapted to move through the pipeline, is provided with a telescopic strut mechanism with at least one telescopic strut for temporary fixation in the pipeline during clamp installation and can be mutually coupled with articulated joints to other identical or similar installation devices.
  • It comprises a support body and an expansion mechanism with a clamping wheel, which has a lifting drive mounted in the lower clamping housing, the lifting piston of the drive passing through a piston hole into the inner cavity of the upper clamping housing, where a wheel bed fixed to the expansion piston is slidably mounted in the vertical direction.
  • a toothed clamping wheel is pivoted in the wheel bed rotating around the axis parallel to the longitudinal axis of the support body.
  • the toothed clamping wheel is mounted on the support axis of the expansion drive, slidably in the motor housing in the vertical direction, whose teeth correspond dimensionally to the transverse slots of the clamping strap.
  • the essence of the invention consists in the fact that the installation device further comprises a fastening mechanism, which is formed by fastening pliers, to exert pressure on the springs through the travel member of the clamping lock.
  • the fastening pliers have a motion mechanism consisting of a threaded rod, a servomotor with a transmission and a gear with an internal thread corresponding to the threaded rod.
  • the fastening pliers In an arrangement where the path of the springs is the sector and the path of the fastening pliers also describes the shape of the sector, the fastening pliers have an articulated attachment to the body of the installation device on the pins at the centre of rotation.
  • the main benefit of the method of installing the pipe cable clamp and the installation device for carrying it out according to the invention consists in the fact that the re-tensioning of the clamping strap in the pipe takes place gradually in several steps. This significantly increases the achievable force exerted by the clamp strap on the surface of the pipe and thus increases the fixation efficiency.
  • FIG.l schematic front view of the piping with the installed pipe cable clamp with optical cable bracket
  • Fig.2 overall axonometric view of the pipe cable clamp in its entirety with the optical cable bracket
  • FIG.4 schematic section through the centre of the clamping lock of the pipe cable clamp in a vertical plane perpendicular to the longitudinal axis of the device for its installation
  • Fig.5 - axonometric view of the clamping lock with the travel member extended and the compression springs released
  • Fig.8 detail of the motion mechanism of the fastening mechanism of the installation device
  • Fig.9 axonometric view of three coupled installation devices.
  • the installation is performed using a pipe cable clamp 1 (see Figs. 1 to 4) comprising a helically wound flat clamping strap IT provided with transverse slots 111 on which at least one cable bracket 4 is mounted together with a clamping lock 12 in which the clamping strap JT is fixed.
  • the clamping strap IT comprises an outer thread 112 and an inner thread 113, with the inner thread 113 of the clamping strap 11 being slidably mounted in the body of the clamping lock 12.
  • the clamping lock 12 comprises compression springs 139 (see Figs.
  • the compression springs 139 are coupled with the internal thread 113 of the clamping strap JT via a travel member 127 slidably mounted in the clamping lock 12.
  • a pushing tongue 133 (see Fig. 4) is pivoted in the travel member 127, this pushing tongue 133 being provided at its end facing the end of the travel member 127 with spring stops 129 with an upward directed tooth 1332 engaged in one of the transverse slots 111 of the clamping strap H, and being pushed upwards by a spring-loaded pressure element 134 housed in the travel member 127.
  • the helically wound clamping strap JT gradually expands by the action of the clamping wheel 2504 of the expansion mechanism 25 of the installation device (see Fig. 7) by increasing its diameter until it adheres to the inner surface of the pipe 5 over its entire outer circumference.
  • the next phase of the installation consists in at least one re-tensioning of the clamping strap 11, which is performed by repeated prestressing (see Fig. 6) and releasing (see Fig. 5) of springs 139 by the fastening mechanism 26 of the installation device, always with fixing the previously reached clamping strap JT clamping position, for which purpose, the clamping wheel 2504 of the expansion mechanism 25 of the installation device can be used (see Fig. 7).
  • the clamping lock 12 In the initial position of the re-tensioning phase of the installation, the clamping lock 12 is intercepted by the fastening pliers 261 of the fastening mechanism 26 so that its travel member 127 is slightly compressed in order for the springs 139 to generate sufficient pressure to prevent the clamp 1 from popping out of the clamping bed 213 of the installation device.
  • the fastening pliers 261 of the fastening mechanism 26 move the travel member 127 in the clamping lock 12 to the fully retracted position (see Fig. 6), thereby maximally compressing the springs 139 and displacing the tooth 1332 of the push tongue 133 by at least one slot 111 in the clamping strap 11.
  • the travel member 127 of the clamping lock 12 is released by the fastening pliers 261 of the fastening mechanism 26 so that it returns to the initial installation position (see Fig. 5) and the clamping strap JT is further extended and even more tensioned.
  • the described re-tensioning cycle is repeated until the phase when the clamping strap can no longer be tensioned, because during tensioning the tooth 1332 of the push tongue 133 no longer moves by a single slot 111 in the strap IT, which is identified by not hearing the characteristic sound of the tooth 1332 of the push tongue 133 snapping into the next slot
  • the installation device 2 (see Fig. 7) for carrying out the method according to the invention is adapted for movement through piping 5. It is provided with a telescopic strut mechanism 23 with at least one telescopic strut 2301 for temporary fixation in the pipeline 5 during clamp J_ installation and can be mutually coupled with articulated joints 3J_ to other identical or similar installation devices (see Fig. 9).
  • the installation device 2 comprises a support body 2J_ and an expansion mechanism 25 (see Fig. 7 and 8) with a clamping wheel 2504. which has a lifting drive mounted in the lower clamping housing 223. the lifting piston of the drive passing through a piston hole into the inner cavity of the upper clamping housing 224. where a wheel bed fixed to the expansion piston is slidably mounted in the vertical direction.
  • a toothed clamping wheel 2504 is pivoted in the wheel bed rotating around the axis parallel to the longitudinal axis of the support body 21.
  • the toothed clamping wheel is mounted on the support axis of the expansion drive, slidably in the motor housing 225 in the vertical direction, whose teeth correspond dimensionally to the transverse slots 111 of the clamping strap J .
  • the installation device 2 further comprises a fastening mechanism 26, which is formed by fastening pliers 261 for applying pressure to the springs 139 by means of the travel member 127 of the clamping lock 12.
  • the fastening pliers 261 are fitted with a motion mechanism 264 formed by a threaded rod 2641, a servomotor with a transmission 2642 and a gear with an internal thread corresponding to the threaded rod 2643.
  • the fastening pliers 261 have an articulated attachment 262 to the body 21 of the installation device on the pins 263 at the centre of rotation (see Fig. 7).
  • the pipe cable clamp and the installation device according to the invention can be used for the introduction of data lines, in particular optical cables for high-speed Internet, into buildings and households without the need for excavation works using existing sewer piping or other available pipelines.

Abstract

With the method of installing the pipe cable clamp with repeated clamping of the clamping strap (11), in the first phase of the installation, at the installation site, the helically wound clamping strap (11) gradually expands by the action of the expansion mechanism of the installation device by increasing its diameter until it adheres to the inner surface of the pipe over its entire outer circumference. The next phase of the installation consists in at least one re-tensioning of the clamping strap (11), which is performed by the repeated prestressing and releasing of springs (139) of the travel member (127) of the clamping lock (12) by the fastening mechanism of the installation device, always with fixing the previously reached clamping strap (11) clamping position. The tensioning cycle is repeated up to reaching the phase when the clamping strap can no longer be tensioned.

Description

METHOD OF INSTALLING A PIPE CABLE CLAMP WITH REPEATED TENSIONING OF THE CLAMPING STRAP AND A RELATED INSTALLATION DEVICE FOR ITS PERFORMANCE
Field of technology
The invention relates to the method of installing a pipe cable clamp for guiding cables in pipes, in particular sewer network pipes, with repeated tensioning of the clamping strap and an installation device for carrying out this method.
Current state of technology
Currently, a number of solutions are known for installing optical cables in a sewer network. For example, Japanese Patent Application JPH05272664 describes the fixing of cables in pipes by means of horseshoe- shaped spring-loaded brackets made of a flat material and fixed along the walls of the pipe with the open part facing downwards. These brackets abut on the inner walls of the pipe only by the force of their pre- springing and are set into the pipe by means of inverted T-shaped segments detachably attached by means of locks to the brackets at the ends of their arms which enclose the horseshoe shape to a smaller diameter than the pipe diameter and which are interconnected with a pulling cord. After transporting the brackets to the place of destination in the pipeline, the T-segments are disconnected from the brackets by pulling them in one direction by means of a pulling cord. The method of fastening the brackets is very complicated and the reliability of their fastening at a specific place is quite problematic, also due to the obviously weak expansion force of the brackets given only by the prestressing of the material used.
Another design of a fastening element by means of which optical cables can be held in a waste water pipe is known, for example, from the EP953162 European patent file. This fastening element consists of a flexibly prestressed closed stainless steel ring, which presses against the inner wall of the waste water pipe, and which is transported and fixed to the designated place by a remote-controlled robot. However, this solution cannot be used for pipes with a diameter of less than 200 mm.
Another European patent EP1271728 relates to a similar fastening element, but made of a flexibly expandable thermoplastic material which is expanded by means of hot water or steam. The magnitude of the pressing force holding the fastening element in place is debatable; furthermore this design considerably reduces the inner diameter of the pipe and its disassembly or re-installation of cables is practically impossible. A similar cable fastening system is described in Japanese Patent Applications JP2002250849, JPH06339216 and British Patent Application GB2345388, where the cable fastening is performed with a special foam at either the top or bottom of the pipe. These solutions are unsuitable for small pipe diameters, as they greatly reduce its useful diameter and in these cases it is very problematic to add another cable or to uninstall or reinstall the same, because the foam deposit must first be removed and only then can these tasks be performed, which basically means a complete reinstallation.
Another possible solution described in the Japanese Patent Application JPH10110464 is the use of a special pipe with an integrated bracket installed directly within in the production phase. However, such a solution is applicable and feasible only when new buildings are founded with a newly laid pipeline network and is therefore not applicable to the existing conventional pipelines already installed. Solutions for laying cables with special attachment brackets fixed to the inner wall of the pipe by drilling it, which can result in damage to the pipe material and a risk of damage or rupture are also known.
The German Patent Application DE19825325 addresses the solution for laying optical cables by means of a longitudinally folded hose made of fabric or gel material, on the outer surface of which the optical cables are fixed. The hose material is impregnated with a thermosetting or UV curable resin. After it is inserted into the pipe, the hose is stretched and pressed against the inner surface of the pipe with pressurized air and subsequently it is cured by heat or UV radiation. Any inspection of installation (lying) of optical cables, or their replacement or addition of another cable is impossible. The resistance of the material of the hose inserted to the pipe to mechanical or chemical influences given by the internal environment of the waste pipe also appears to be problematic.
European Patent Application EP0936479 describes a clamp with a clamping closure, the basis of which is a helically wound flat clamping strap with transverse sections, which is anchored in the clamp with one end, then surrounds the inner surface of the pipe and with the other free end it is inserted back into the clamp with the clamping closure provided with a releasable snap-in element. The clamping closure is provided with a spring acting extensively on the clamping strap via its mechanism, whereby the clamp is fixed around the inner wall of the pipe. However, this solution is intended for pipes from a diameter of 200 mm, that also being due to the dimensions of the clamping closure, which significantly reduces the clearance of the pipe, which is also due to the location of springs above the clamping strap. Furthermore, due to the concept of the clamp installation device described in the European Patent File EP0978743, it is only feasible in straight sections of the backbone sections of waste piping systems.
Other designs of robots for installing optical cable fastening components in sewer pipes are described in Japanese Patent Applications JP2000350322 and JP2002095120. A common feature of these designs is the possibility of their use only in backbone sewer pipes with pipe diameters in the range of 200 to 800 mm, which is provided in the points of "bends" and in straight sections after a certain distance with accessible inspection shafts. The fasteners are installed in such a way that an assembly car arrives above the shaft, the operator descends and inserts an installation robot into the pipes, which transports the clamps or other fastening element in place, always only in straight sections. Due to the high structural complexity of the design of robots for the installation of fasteners, it is not yet known how to install optical cables in the end connections of the sewer network system, where domestic connections have a diameter of 150 mm and bends are of 90 degrees. The robots most often weigh over 100 kg and have a total length of over 1500 mm, so insertion into the working position into the sewer pipe takes place in such a way that the individual parts are inserted into the pipe and only there are they assembled into a single unit. Such a procedure is very demanding both in terms of time and in terms of the skills of the installers.
So far, the most perfect solution for pipe cable clamps and equipment assemblies for their installation is the one according to the Czech Patent Application PV 2018-382, which allows fixing the optical cable to sewer end connections with a diameter of less than 200 mm with bends at 90° angles, even in places that are not accessible through sewer shafts. The pipe cable clamp according to this design comprises a helically wound flat clamping strap provided with transverse slots, to which at least one cable bracket is mounted and which comprises an external thread and an internal thread, as well as a clamping lock in which the clamping strap is mounted. In this case, on the one hand, the internal thread of the clamping strap is mounted slidably in the body of the clamping lock, and on the other hand, the clamping lock comprises compression springs coupled to the internal thread of the clamping strap. The essence of the solution lies in the fact that the springs are mounted in the clamping lock along the edges of the clamping strap outside the contour of its perpendicular projection to the cylindrical surface of the pipe, while the compression springs being coupled with the inner thread of the clamping strap by a travel member slidably mounted in the clamping lock. The travel member is provided at the end opposite the rear wall of the clamping lock with spring stops, against which the springs lean at one end, while at the other end they lean against the rear wall of the clamping lock. The travel member is coupled with the internal thread of the clamping strap by means of a push tongue pivoted in the travel member, while the travel member is adapted both to fix it in the rear position when the springs are compressed and to release it by means of a latch. This latch is slidably mounted in the vertical direction in a bottom-open latch cavity formed in the travel member, where the latch spring also resting in the latch cavity abuts on the upper surface of the latch. A through-latch hole is formed in the bottom of the inner cavity, the dimensions of which correspond to the dimensions of the respective part of the latch with which they are mutually compatible.
Furthermore, the subject of the solution according to PV 2018-382 is the set of devices for the installation of the pipe cable clamp. This assembly is adapted for movement through the piping and comprises both the support body and an expansion mechanism with a clamping wheel. The individual devices can be mutually coupled by articulated joints in an arbitrary number of pieces. The support body of each device is provided with a clamping bed for accommodating a clamping lock of the pipe cable clamp, the clamping lock being fixed to the clamping bed by clamping between the jaws of the jaw mechanism. The shape and the dimensions of the clamping bed correspond to the shapes and dimensions of the clamping lock of the pipe cable clamp. A firing drive for fixing the pipe cable clamp in the pipe is placed under the clamping bed and a through firing hole is formed in the surface of the clamping bed, where this hole corresponds with its dimensions and position to the shapes and position of the latch of the travel member of the pipe cable clamp lock. The firing drive is equipped with a firing pin, the dimensions and location of which correspond to the dimensions and position of the firing hole. The device is provided with a telescopic strut mechanism with at least one telescopic strut. To ensure the movement through and along the pipeline, the device is provided with a bogie with travel wheels mounted on the wheel shafts of the travel motors, which are slidably mounted with respect to the support body in the vertical direction, their vertical movement being controlled by lifting motors.
However, even with the above-described and utmost perfect solution of the pipe cable clamp and the device for its installation, the fundamental issue of all the known solutions persists. This issue is due to the fact that the fixation of the clamp in the pipe is a process consisting in a one-time unlinking of the prestressed clamping strap after the release of the latch by the firing drive of the installation device. The force at which the clamping strap is pressed against the surface of the pipe is determined here only by the degree of prestressing of the clamping strap in the preparation phase and it is no longer possible to correct it in any manner subsequently.
Essence of the invention
The method of installing a pipe clamp with repeated re-tensioning of the clamping strap according to the invention contributes to the elimination of the above-mentioned problems. This method of installation employs the pipe cable clamp according to this design comprises a helically wound flat clamping strap provided with transverse slots, to which at least one cable bracket is mounted and which comprises an external thread and an internal thread, as well as a clamping lock in which the clamping strap is mounted. The inner thread of the clamping strap is slidably mounted in the clamping lock body and the clamping lock comprises compression springs which abut with one end on the spring stops of the clamping lock and at the other end they abut on the rear wall of the clamping lock and are coupled with the inner thread of the clamping strap via the travel slidably mounted member in the clamping lock. A pushing tongue is pivoted in the travel member, this pushing tongue being provided at its end facing the end of the travel member with spring stops with an upward directed tooth engaged in one of the transverse slots of the clamping strap, and being pushed upwards by a spring-loaded pressure element housed in the travel member.
In the first phase of the installation, at the installation site, the helically wound clamping strap gradually expands by the action of the clamping wheel of the expansion mechanism of the installation device by increasing its diameter until it adheres to the inner surface of the pipe over its entire outer circumference.
The essence of the invention lies in the fact that the next phase of the installation consists in at least one re-tensioning of the clamping strap, which is performed by repeated prestressing and releasing of springs by the fastening mechanism of the installation device, always with fixing the previously reached clamping strap clamping position. In the initial position of the re-clamping phase of the installation, the clamping lock is intercepted by the fastening pliers of the fastening mechanism so that its travel member is slightly compressed in order for the springs to generate sufficient pressure to prevent the clamp from popping out of the clamping bed of the installation device. After the position of the clamping strap is first fixed, the fastening pliers of the fastening mechanism move the travel member in the clamping lock to the fully retracted position, thereby maximally compressing the springs and displacing the tooth of the push tongue by at least one slot in the clamping strap. Furthermore, after fixing the achieved re-clamped position of the clamping strap, the travel member of the clamping lock is released by the fastening pliers of the fastening mechanism so that it returns to the initial installation position and the clamping strap is further extended and re-clamped. Subsequently, the described re-tensioning cycle is repeated until the phase when the clamping strap can no longer be tensioned, because during tensioning the tooth of the push tongue no longer moves by a single slot in the strap, which is identified by not hearing the characteristic sound of the tooth of the push tongue snapping into the next slot in the strap.
The clamping wheel of the expansion mechanism can be used to an advantage to fix the previously reached tensioning position of the clamping strap.
The installation device for carrying out the method according to the invention, which is adapted to move through the pipeline, is provided with a telescopic strut mechanism with at least one telescopic strut for temporary fixation in the pipeline during clamp installation and can be mutually coupled with articulated joints to other identical or similar installation devices. It comprises a support body and an expansion mechanism with a clamping wheel, which has a lifting drive mounted in the lower clamping housing, the lifting piston of the drive passing through a piston hole into the inner cavity of the upper clamping housing, where a wheel bed fixed to the expansion piston is slidably mounted in the vertical direction. A toothed clamping wheel is pivoted in the wheel bed rotating around the axis parallel to the longitudinal axis of the support body. The toothed clamping wheel is mounted on the support axis of the expansion drive, slidably in the motor housing in the vertical direction, whose teeth correspond dimensionally to the transverse slots of the clamping strap.
The essence of the invention consists in the fact that the installation device further comprises a fastening mechanism, which is formed by fastening pliers, to exert pressure on the springs through the travel member of the clamping lock. The fastening pliers have a motion mechanism consisting of a threaded rod, a servomotor with a transmission and a gear with an internal thread corresponding to the threaded rod.
In an arrangement where the path of the springs is the sector and the path of the fastening pliers also describes the shape of the sector, the fastening pliers have an articulated attachment to the body of the installation device on the pins at the centre of rotation.
The main benefit of the method of installing the pipe cable clamp and the installation device for carrying it out according to the invention consists in the fact that the re-tensioning of the clamping strap in the pipe takes place gradually in several steps. This significantly increases the achievable force exerted by the clamp strap on the surface of the pipe and thus increases the fixation efficiency. Explanation of drawings
To further clarify the essence of the invention, the invention is accompanied by accompanying drawings, representing the following:
Fig.l - schematic front view of the piping with the installed pipe cable clamp with optical cable bracket,
Fig.2 - overall axonometric view of the pipe cable clamp in its entirety with the optical cable bracket,
Fig.3 - view of the individual parts of the disassembled pipe cable clamp,
Fig.4 - schematic section through the centre of the clamping lock of the pipe cable clamp in a vertical plane perpendicular to the longitudinal axis of the device for its installation, Fig.5 - axonometric view of the clamping lock with the travel member extended and the compression springs released,
Fig.6 - axonometric view of the clamping lock with the travel member fully retracted and the compression springs maximally compressed,
Fig.7 - axonometric view of the overall arrangement of the functional parts of the installation device,
Fig.8 - detail of the motion mechanism of the fastening mechanism of the installation device, Fig.9 - axonometric view of three coupled installation devices.
Design application example
In the method of installing the pipe cable clamp with repeated tensioning of the clamping strap in the design application example, the installation is performed using a pipe cable clamp 1 (see Figs. 1 to 4) comprising a helically wound flat clamping strap IT provided with transverse slots 111 on which at least one cable bracket 4 is mounted together with a clamping lock 12 in which the clamping strap JT is fixed. The clamping strap IT comprises an outer thread 112 and an inner thread 113, with the inner thread 113 of the clamping strap 11 being slidably mounted in the body of the clamping lock 12. The clamping lock 12 comprises compression springs 139 (see Figs. 5 and 6) which abut with one end on the spring stops 129 of the clamping lock 12 and at the other end they lean against the rear wall 125 of the clamping lock 12. The compression springs 139 are coupled with the internal thread 113 of the clamping strap JT via a travel member 127 slidably mounted in the clamping lock 12. A pushing tongue 133 (see Fig. 4) is pivoted in the travel member 127, this pushing tongue 133 being provided at its end facing the end of the travel member 127 with spring stops 129 with an upward directed tooth 1332 engaged in one of the transverse slots 111 of the clamping strap H, and being pushed upwards by a spring-loaded pressure element 134 housed in the travel member 127.
In the first phase of the installation, at the installation site, the helically wound clamping strap JT gradually expands by the action of the clamping wheel 2504 of the expansion mechanism 25 of the installation device (see Fig. 7) by increasing its diameter until it adheres to the inner surface of the pipe 5 over its entire outer circumference.
The next phase of the installation consists in at least one re-tensioning of the clamping strap 11, which is performed by repeated prestressing (see Fig. 6) and releasing (see Fig. 5) of springs 139 by the fastening mechanism 26 of the installation device, always with fixing the previously reached clamping strap JT clamping position, for which purpose, the clamping wheel 2504 of the expansion mechanism 25 of the installation device can be used (see Fig. 7). In the initial position of the re-tensioning phase of the installation, the clamping lock 12 is intercepted by the fastening pliers 261 of the fastening mechanism 26 so that its travel member 127 is slightly compressed in order for the springs 139 to generate sufficient pressure to prevent the clamp 1 from popping out of the clamping bed 213 of the installation device. After the position of the clamping strap H is first fixed, the fastening pliers 261 of the fastening mechanism 26 move the travel member 127 in the clamping lock 12 to the fully retracted position (see Fig. 6), thereby maximally compressing the springs 139 and displacing the tooth 1332 of the push tongue 133 by at least one slot 111 in the clamping strap 11.
Furthermore, after fixing the achieved re-tensioning of the position of the clamping strap IT, the travel member 127 of the clamping lock 12 is released by the fastening pliers 261 of the fastening mechanism 26 so that it returns to the initial installation position (see Fig. 5) and the clamping strap JT is further extended and even more tensioned.
The described re-tensioning cycle is repeated until the phase when the clamping strap can no longer be tensioned, because during tensioning the tooth 1332 of the push tongue 133 no longer moves by a single slot 111 in the strap IT, which is identified by not hearing the characteristic sound of the tooth 1332 of the push tongue 133 snapping into the next slot
III in the strap JT .
The installation device 2 (see Fig. 7) for carrying out the method according to the invention is adapted for movement through piping 5. It is provided with a telescopic strut mechanism 23 with at least one telescopic strut 2301 for temporary fixation in the pipeline 5 during clamp J_ installation and can be mutually coupled with articulated joints 3J_ to other identical or similar installation devices (see Fig. 9). The installation device 2 comprises a support body 2J_ and an expansion mechanism 25 (see Fig. 7 and 8) with a clamping wheel 2504. which has a lifting drive mounted in the lower clamping housing 223. the lifting piston of the drive passing through a piston hole into the inner cavity of the upper clamping housing 224. where a wheel bed fixed to the expansion piston is slidably mounted in the vertical direction. A toothed clamping wheel 2504 is pivoted in the wheel bed rotating around the axis parallel to the longitudinal axis of the support body 21. The toothed clamping wheel is mounted on the support axis of the expansion drive, slidably in the motor housing 225 in the vertical direction, whose teeth correspond dimensionally to the transverse slots 111 of the clamping strap J .
The installation device 2 further comprises a fastening mechanism 26, which is formed by fastening pliers 261 for applying pressure to the springs 139 by means of the travel member 127 of the clamping lock 12. The fastening pliers 261 are fitted with a motion mechanism 264 formed by a threaded rod 2641, a servomotor with a transmission 2642 and a gear with an internal thread corresponding to the threaded rod 2643.
In the sample arrangement of the installation device 2 where the path of the springs 139 is the sector and the path of the fastening pliers 261 also describes the shape of the sector, the fastening pliers 261 have an articulated attachment 262 to the body 21 of the installation device on the pins 263 at the centre of rotation (see Fig. 7).
Industrial applicability
The pipe cable clamp and the installation device according to the invention can be used for the introduction of data lines, in particular optical cables for high-speed Internet, into buildings and households without the need for excavation works using existing sewer piping or other available pipelines.
List of reference marks
I Pipe cable clamp
I I Clamping strap
III Transverse slots
112 Outer thread
113 Inner thread
12 Clamping lock
125 Rear clamping wall 127 Travel member
129 Spring stops
133 Push tongue
1332 Tooth
134 Spring loaded pressure element
139 Compression springs
2 Installation device
21 Support body
213 Clamping bed
223 Lower clamping housing
224 Upper clamping housing
225 Motor housing
23 Telescopic mechanism
2301 Telescopic mechanism strut
25 Expansion mechanism
2504 Clamping wheel
26 Clamping mechanism
261 Clamping pliers
262 Articulated mounting
263 Pin
264 Motion mechanism
2641 Threaded rod
2642 Servomotor with transmission
2643 Toothed wheel with internal thread corresponding to the threaded rod
31 Articulated joint
4 Cable bracket
5 Pipeline

Claims

WO 2021/027981 ~ n ~ PCT/CZ2020/050041 P A T E N T C L A I M S
1. A method of installing a pipe cable clamp with re-tensioning of the clamping strap, consisting in the fact that the installation is performed using a pipe cable clamp (1) comprising a helically wound flat clamping strap (11) provided with transverse slots (111) on which at least one cable bracket (4) is mounted which comprises an outer thread (112) and an inner thread (113), a clamping lock (12) in which the clamping strap (11) is fixed, the inner thread (113) of the clamping strap (11) being in the clamping lock (12) body, slidably mounted and the clamping lock (12) comprises compression springs (139) which abut with one end on the spring stops (129) of the clamping lock (12) and at the other end on the rear wall (125) of the clamping lock (12) and are coupled with the internal thread (113) of the clamping strap (11) by means of a travel member (127) slidably mounted in the clamping lock (12) and further that a compression tongue (133) is pivoted in the travel member (127) which is fitted with spring stops (129) at its end facing the end of the travel member (127) with an upwardly directed tooth (1332) engaged in one of the transverse slots (111) of the clamping strap (11), the push tongue (133) being pushed upwards by a spring-loaded pressure element (134) mounted in the running member (127), in which during the first phase of installation the helically wound clamping strap (11) is gradually expanded at the installation site by the action of the clamping wheel (2504) of the expansion mechanism (25) of the installation device, increasing its diameter until it adheres throughout its outer circumference to the inner surface of the pipe (5), characterized by the fact that the next phase of installation is followed by a method of installing at least one re-tensioning of the clamping strap (11) which is performed by repeated pre-tensioning and releasing the springs (139) by the fastening mechanism (26) of the installation device, always with fixing the previously reached clamping position of the clamping strap (11), whereby, in the initial position of the clamping phase of the installation, the clamping lock (12) is held by the fastening pliers (261) of the fastening mechanism (26). so that its travel member (127) is slightly compressed so that the springs (139) exert sufficient pressure against the clamp (1) popping out of the clamping bed (213) of the installation device, after the position of the clamping strap (11) is first fixed, the fastening pliers (261) of the fastening mechanism (26) move the travel member (127) in the clamping lock (12) to the fully retracted position, thereby maximally compressing the springs (139) and displacing the tooth (1332) of the push tongue (133) by at least one slot (Ill) in the clamping strap (11), further, after fixing the reached clamping position of the clamping strap (11), the travel member (127) of the clamping lock (12) is released by the fastening pliers (261) of the fastening mechanism (26) so as to return to the initial position of the installation and the clamping strap (11) is further extended again and further tensioned, after which the described clamping cycle is repeated until the phase when the clamping strap (11) can no longer be further tensioned, because the compression tongue (133) no longer moves by any slot (111) in the strap (11), which is identified by not hearing the characteristic sound of the click of the tooth (1332) of the compression tongue (133) as it snaps into the next slot (111) in the strap (11).
2. The method according to Claim 1, characterized by the fact that the clamping wheel (2504) of the expansion mechanism (25) serves to fix the previously reached clamping position of the clamping strap (11).
3. The installation device for carrying out the method according to claim 1, which is adapted to move along through the pipe (5), is provided with a telescopic strut mechanism (23) with at least one telescopic stmt (2301) for temporary fixation in the pipe (5) when installing the clamp (1), may be coupled by articulated joints (31) with other identical or similar installation devices and comprises a support body (21) and an expansion mechanism (25) with a clamping wheel (2504) with a lifting drive housed in the lower clamping housing (223), the piston passes through a piston hole into the inner cavity of the upper clamping housing (224), wherein a wheel bed fixed to the expansion piston is slidably mounted in the vertical direction, with a toothed clamping wheel (2504) being mounted rotatably in an axis parallel to the longitudinal axis of the support body (21), which is mounted on the support axis of the expansion drive, slidably mounted in the vertical direction in the motor housing (225) and whose teeth correspond in size to the transverse slots (111) of the clamping strap (11), characterized by the fact that the installation device further comprises a fastening mechanism (26) formed by fastening pliers (261), to apply pressure to the springs (139) via the travel member (127) of the clamping lock (12), with the fastening pliers (261) having a motion mechanism (264) consisting in a threaded rod (2641), a servomotor with a transmission (2642) and a gear with an internal thread corresponding to the threaded rod (2643). Installation device according to claim 2 characterized by the fact that in the arrangement where the path of the springs (139) is the sector and the path of the fastening pliers (261) also describes the shape of the sector, the fastening pliers (261) have an articulated attachment (262) to the body (21) of the installation device (2) on the pins (263) at the centre of rotation.
EP20742638.8A 2019-08-14 2020-06-05 Method of installing a pipe cable clamp with repeated tensioning of the clamping strap and a related installation device for its performance Pending EP4014079A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2019-533A CZ308481B6 (en) 2019-08-14 2019-08-14 Method of installing a pipeline cable clamping device with repeated tensioning of the fastening tape and an installation device for its implementation
PCT/CZ2020/050041 WO2021027981A1 (en) 2019-08-14 2020-06-05 Method of installing a pipe cable clamp with repeated tensioning of the clamping strap and a related installation device for its performance

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CN114251539B (en) * 2021-12-27 2022-09-02 中技智能科技(盐城)有限公司 Ultraviolet curing integrated vehicle adaptive to drainage pipelines with different pipe diameters

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FR2718381B1 (en) * 1994-04-12 1996-06-28 Caillau Ets Pair of jaws intended to be mounted on the arms of pliers to tighten a collar.
DE19701787A1 (en) * 1997-01-20 1998-07-23 Hecht Agathe Optical fiber cable network and method for laying an optical fiber cable network
EP0936713A1 (en) * 1998-02-17 1999-08-18 KA-TE System AG Device for inserting elongate items into clamps
EP0936479A1 (en) * 1998-02-17 1999-08-18 KA-TE System AG Lining with tension fastener
ES2154931T3 (en) * 1998-08-07 2001-04-16 Ka Te System Ag DEVICE FOR ASSEMBLY OF AN INNER FLANGE IN A NON-ACCESSIBLE TUBE.
DE10026847A1 (en) * 2000-05-31 2002-01-10 Engelbert Gmeilbauer Tool for tensioning or releasing / opening spring clamping elements
US6644892B2 (en) * 2001-06-08 2003-11-11 Nihonhume Corporation Method for attaching cable and cable holder
US7313984B1 (en) * 2005-07-27 2008-01-01 Snap-On Incorporated Universal retention cavities for cable-mounted remote hose clamp pliers heads
TWM466768U (en) * 2013-08-13 2013-12-01 Orient River Inc Composite pneumatic tool

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